5- At last the AutoCompleteBox needs to be populated, for this we will implement a list within our archive,    MainPage.xaml.cs

5.1 We will add the following usings.

using System.Collections;
using System.Collections.Generic;

5.2 We assign a name to our AutoCompleteBox control like “resourcesABC”.

<input:AutoCompleteBox x:Name="resourcesACB">

5.3 After the component has been launched we add the next code, with this code we will start a list to populate our ABC.

List<string> resources = new List<string>();

                           resources.Add("Cesar Diaz");

                           resources.Add("Cesar Vazquez");

                           resources.Add("Cesar Olivas");

                           resources.Add("Fer Quiros");

                           resources.Add("Fer Mendoza");

                           resources.Add("Fer Gutierrez");

                           resources.Add("Marlen Rocha");

                           resources.Add("Nicolas Porto");

                           resources.Add("Oliver Nunez");

                           resources.Add("Omar Lara");

                           resources.Add("Otoniel Diaz");

                           resources.Add("Yair Guajardo");

5.4 We assign the ItemSource to the AutoCompleteBox, through the x:name to populate it.

resourcesACB.ItemsSource = resources;

5.5 At last we publish our solution with the f5, which will be published at our browser.

Thank you.

Complete example.

MainPage.xaml

<UserControl

        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

        xmlns:input="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Input"

        x:Class="ACB_Silverlight.MainPage"

        Width="640" Height="480">

        <Grid x:Name="LayoutRoot" Background="White">

                <StackPanel x:Name="sp" HorizontalAlignment="Center" Margin="0" Width="400" Height="120">

                        <TextBlock Margin="0" Text="Serch Resources:" TextWrapping="Wrap" FontFamily="Trebuchet MS" FontSize="24" FontWeight="Bold"/>

                        <input:AutoCompleteBox x:Name="resourcesACB" Margin="0,10,0,0" VerticalAlignment="Bottom" FontFamily="Verdana" FontSize="18"/>

                        <Button Height="27" HorizontalAlignment="Right" Margin="0,10,0,0" VerticalAlignment="Bottom" Width="80" Content="OK" FontWeight="Bold" FontSize="14"/>

                </StackPanel>

                <Image Height="88" Margin="0,0,233,0" VerticalAlignment="Top"

                Source="Images/logo_sieena.png" Stretch="Fill"/>

        </Grid>

</UserControl>

MainPage.xaml.cs

using System;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Ink;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using System.Collections;

using System.Collections.Generic;

namespace SilverlightAutocomplete

{

        public partial class MainPage : UserControl

        {

                public MainPage()

                {

                        // Required to initialize variables

                        InitializeComponent();

                        List<string> resources = new List<string>();

                                resources.Add("Cesar Diaz");

                                resources.Add("Cesar Vazquez");

                                resources.Add("Cesar Olivas");

                                resources.Add("Fer Quiros");

                                resources.Add("Fer Mendoza");

                                resources.Add("Fer Gutierrez");

                                resources.Add("Marlen Rocha");

                                resources.Add("Nicolas Porto");

                                resources.Add("Oliver Nunez");

                                resources.Add("Omar Lara");

                                resources.Add("Otoniel Diaz");

                                resources.Add("Yair Guajardo");

                                resourcesACB.ItemsSource = resources;

                }

        }

}